
Dahua DHI-ASC4204B-S Four-Door Access Controller
Dahua DHI-ASC4204B-S network access controller for four doors: 100,000 users, card, PIN, fingerprint and QR code, PoE powered. In stock in Tashkent.
▸
Cards
100 000
▸
Passwords
100 000
▸
Platforms
SmartPSS Lite, DSS Pro, DMSS
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Fingerprints
10 000
Specifications
- Cards
- 100 000
- Passwords
- 100 000
- Platforms
- SmartPSS Lite, DSS Pro, DMSS
- Fingerprints
- 10 000
- Readers
- RS-485 and Wiegand
- Users
- 100 000
- Event log
- 500,000 records
- Lock power
- 4 locks at 12 V, up to 1.2 A
- Access methods
- card, PIN, fingerprint, QR code and their combinations
- Number of doors
- 4, one-way passage
- Controller power
- PoE or external adapter
- Operating system
- Linux with built-in web interface
- Reader power
- 4 readers at 12 V, up to 500 mA
Dahua DHI-ASC4204B-S network access controller for four doors: 100,000 users, card, PIN, fingerprint and QR code, PoE powered. In stock in Tashkent.
Advantages
- One controller serves four doors and powers their locks and readers directly, so no separate power supply appears in the cabinet for each point.
- Five ways in, including QR codes, and they can be combined: a server room can demand card plus fingerprint while the office keeps a single badge.
- Unlock schedules run by time of day — card during working hours, card plus PIN at night — and the switch happens on its own.
- The alarm set covers real scenarios: duress, tamper, forced door, door held open too long, and repeated attempts with an invalid card.
- PoE power means a single cable to the controller — no mains line needs to be pulled to the installation point.
Applications
- Offices and business centres: four doors on one floor from a single controller.
- Warehouses and production sites with restricted zones and a fire alarm interlock.
- Healthcare and education, where a detailed passage log is required.
Frequently asked questions
How does a controller differ from a standalone reader?
A standalone reader keeps its database internally and serves one door. A controller holds a shared database of 100,000 users, keeps a single log of 500,000 events, manages four doors and integrates with video surveillance and fire alarm systems.
What is anti-passback?
It refuses a second entry on the same credential while the log shows the holder has not left. That closes the practice of handing a card back over the fence and makes time tracking trustworthy.
Do the locks need their own power supply?
No. The controller powers four locks at 12 V up to 1.2 A and four readers up to 500 mA. It is enough to choose an adapter of sufficient rating; individual supplies per door are unnecessary.
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